Welcome to the United Gastroenterologists website.

The mission of United Gastroenterologists is to improve the health of our community by setting the standard of excellence in patient care.

Specifically, we aim:

To provide the highest quality compassionate care and service for all people in the prevention, diagnosis, and treatment of digestive diseases.

To attract a team of physicians and other health care professionals of the highest moral character and greatest skill.

To be the premier Gastroenterology practice in our region with a dedication to achieving the highest levels of patient satisfaction while implementing continued process improvement.

To provide our patients access to advanced cutting-edge Gastroenterology services by leveraging our group’s resources and close relationships and affiliations with University medical centers in the region.

To demonstrate empathy in caring for patients which is more than just physical healing – it’s establishing a connection and trusting relationship with care that encompasses mind, body, and spirit.

Our History

Dr. Thomas Eastman began a solo Gastroenterology private practice based in Fallbrook, CA over 25 years ago. In 2002, Dr. John Hong joined Dr. Thomas Eastman. The decision was made to establish an independent private practice medical corporation (United Gastroenterologists). The practice started out with just three employees, two physicians, and one desktop computer serving the communities of Fallbrook and Temecula. From its inception, UG has been committed to providing the highest level of quality care by serving our patients with the utmost compassion.

Over the years UG has continued to expand tremendously as a regional GI referral practice for Riverside County, San Diego County and Orange County. In 2005, the practice opened up United Surgery Center-Murrieta, a state licensed, Medicare certified, AAAHC (Accreditation Association for Ambulatory Health Care) Ambulatory Surgery Center. Over 100,000 procedures have been successfully performed since. Since then, additional Ambulatory Surgery Centers: United Surgery Center-Temecula, United Surgery Center-Irvine, and United Surgery Center-Orange have been added.

Over the years the practice has also added: the GI Imaging Center (CT Enterography, CT Colonography, Ultrasound) accredited by the American College of Radiology, the Center for Medical Weight Loss, and an Anatomic Pathology Lab accredited by The Joint Commission (National Quality Approval Award), and a fully integrated Clinical Research Institute. United Gastroenterologists has over 50 clinical providers who are committed to providing excellent high quality patient care to the residents of Fallbrook, Encinitas, Temecula, Murrieta, Menifee, Lake Elsinore, Corona, Eastvale, Rancho Mirage, La Quinta, Orange, Santa Ana, Westminster, Los Alamitos, Huntington Beach, Irvine, and Newport Beach.